AMERICANS no longer bother much with political developments in Great Britain. True, an IRA bomb set off in London’s theater district, near Harrod’s department store, or at other sites favored by American tourists, can garner a few paragraphs in the back pages of the New York Times, and a visit by Labour party leader Tony Blair to Washington is worth a few minutes on the Fox Morning News and some minor coverage in the Washington Post.  But, ever since the Tories lost their taste for Reaganesque economic and foreign policies, and jettisoned the always-interesting Margaret Thatcher in favor of the relentlessly gray John Major, there is little about British politics that much interests US.